1 00:00:00,540 --> 00:00:05,870 OK as you can see here it's now actually showing us are the same results. 2 00:00:05,880 --> 00:00:06,420 OK. 3 00:00:06,510 --> 00:00:11,200 The checkbox of this yes check box is actually checked on. 4 00:00:11,580 --> 00:00:12,190 OK. 5 00:00:12,480 --> 00:00:18,510 So the value of the box is actually true and the value of this check box is actually false. 6 00:00:18,810 --> 00:00:19,680 OK. 7 00:00:20,070 --> 00:00:21,860 So hopefully that makes sense. 8 00:00:21,870 --> 00:00:26,820 Let's actually go back and say this content's underline minute that example and then let's actually 9 00:00:27,110 --> 00:00:35,570 try again linearly out horizontally into this linearly out vertical and then let's actually gain a large 10 00:00:35,580 --> 00:00:39,130 takes you into These are linearly horizontal. 11 00:00:39,330 --> 00:00:44,430 So just click on this larger text here and then put it inside. 12 00:00:44,430 --> 00:00:51,470 These are linearly out horizontal Okay and then double click and these are large text view. 13 00:00:52,050 --> 00:00:56,110 And then for the text of this text you just type in here. 14 00:00:56,160 --> 00:00:58,720 True or false. 15 00:00:59,950 --> 00:01:00,940 OK. 16 00:01:01,310 --> 00:01:08,900 And then let's actually write in a checkbox into this linearly or horizontal and if by mistake you put 17 00:01:08,900 --> 00:01:15,290 this checkbox under this linear layout horizontal for example in here you can just delete this component 18 00:01:15,680 --> 00:01:21,050 or you can drag that component inside these are linearly out here. 19 00:01:21,050 --> 00:01:21,460 OK. 20 00:01:21,470 --> 00:01:29,900 So let's actually track a checkbox into this linearly or horizontal and then double click on this checkbox. 21 00:01:29,960 --> 00:01:32,830 So for that for the text of this checkbox just type in here. 22 00:01:32,870 --> 00:01:33,280 Yes. 23 00:01:33,300 --> 00:01:39,370 And for the ID just type in here C is x true or false. 24 00:01:40,020 --> 00:01:48,940 Yes OK and let's actually do i another checkbox into this linearly or horizontal. 25 00:01:48,940 --> 00:01:54,910 So just click on this checkbox here and then put it inside this linearly or horizontal. 26 00:01:55,180 --> 00:01:59,050 So double click on this checkbox and for the text just typing no. 27 00:01:59,260 --> 00:02:05,690 And for the ID just type in C is x true or false. 28 00:02:06,790 --> 00:02:09,180 No. 29 00:02:09,250 --> 00:02:14,260 So the idea of this checkbox as you can see here the idea of this checkbox is C-h x. 30 00:02:14,260 --> 00:02:15,710 True or false. 31 00:02:15,730 --> 00:02:16,800 Yes. 32 00:02:17,140 --> 00:02:19,970 And the idea of this checkbox is C H. 33 00:02:19,990 --> 00:02:20,850 True or false. 34 00:02:20,860 --> 00:02:21,190 No. 35 00:02:21,190 --> 00:02:21,650 OK. 36 00:02:21,700 --> 00:02:25,630 So let's actually click on this linearly and here and here. 37 00:02:25,660 --> 00:02:30,170 Check this checkbox that says Center underline horizontal. 38 00:02:30,540 --> 00:02:31,210 OK. 39 00:02:31,450 --> 00:02:37,990 Can can actually position these components horizontally in the center of this in the center of this 40 00:02:37,990 --> 00:02:39,130 linearly out. 41 00:02:39,340 --> 00:02:47,320 OK so now let's actually go back inside this main activity of a file Let's actually scroll to the top 42 00:02:47,320 --> 00:02:48,070 of the screen. 43 00:02:48,110 --> 00:02:52,230 And now let's actually scroll to the top of the file here. 44 00:02:52,650 --> 00:02:55,480 And this actually creates a comment here. 45 00:02:55,510 --> 00:02:59,770 True or false. 46 00:02:59,830 --> 00:03:09,410 So here I just need to create two checkbox objects so checkbox see X true or false. 47 00:03:10,120 --> 00:03:11,710 Yes. 48 00:03:11,710 --> 00:03:18,600 Assignment operator and then I need to cast this object to a checkbox object find view by ID or that 49 00:03:18,700 --> 00:03:24,550 Id dot c c is x true or false. 50 00:03:24,910 --> 00:03:26,580 Yes. 51 00:03:27,180 --> 00:03:33,940 Again let's actually create a checkbox object C is x true or false. 52 00:03:34,270 --> 00:03:47,620 No assignment operator checkbox find you by ID are taught ID that C is x true or false. 53 00:03:47,800 --> 00:03:49,910 No. 54 00:03:50,090 --> 00:03:50,730 OK. 55 00:03:50,980 --> 00:03:52,500 So hopefully that makes sense. 56 00:03:52,510 --> 00:03:55,540 Now lets actually interact with these objects. 57 00:03:55,540 --> 00:04:05,720 So scroll down the file here and then this actually creates a comment here so just type in here. 58 00:04:05,820 --> 00:04:09,100 True or false. 59 00:04:09,660 --> 00:04:10,440 OK. 60 00:04:10,830 --> 00:04:19,980 And then let's actually create a boolean variable true or false and then there's actually putting in 61 00:04:20,040 --> 00:04:25,590 an assignment operator here and then actually putting a pair of round brackets here. 62 00:04:25,800 --> 00:04:27,330 So here I am just typing. 63 00:04:27,390 --> 00:04:29,900 True or False. 64 00:04:29,910 --> 00:04:31,190 False. 65 00:04:31,920 --> 00:04:32,540 OK. 66 00:04:32,910 --> 00:04:36,550 And then I need to put in a semi-colon at the end of my statement. 67 00:04:36,770 --> 00:04:37,300 OK. 68 00:04:37,380 --> 00:04:42,900 So as you can see here first of all I actually created a variable of type Boolean and then I actually 69 00:04:42,900 --> 00:04:44,880 gave a name to this variable. 70 00:04:44,880 --> 00:04:46,160 True or false. 71 00:04:46,530 --> 00:04:49,720 And here I actually assigned a value to this variable. 72 00:04:50,010 --> 00:04:53,570 And here actually created a boolean expression. 73 00:04:53,850 --> 00:04:55,650 OK true or false. 74 00:04:55,680 --> 00:04:59,450 So the result of this expression is going to be assigned to this variable. 75 00:04:59,460 --> 00:05:03,090 Ok so now let's actually create and if statement here. 76 00:05:03,090 --> 00:05:09,410 If the value of this true or false value is actually true or false. 77 00:05:09,990 --> 00:05:16,980 OK if the value of these are true or false variable is actually true then execute this line of code 78 00:05:16,980 --> 00:05:19,080 here inside of this curly braces. 79 00:05:19,150 --> 00:05:22,440 C X true or false. 80 00:05:22,860 --> 00:05:27,070 Yes said said checked true. 81 00:05:27,750 --> 00:05:32,140 Otherwise else if the value of this. 82 00:05:32,140 --> 00:05:35,700 True or false value but is actually false. 83 00:05:35,790 --> 00:05:37,070 So exclamation mark. 84 00:05:37,140 --> 00:05:39,680 True or false. 85 00:05:40,070 --> 00:05:48,940 Ok then execute this line of code inside of this curly braces C H x true or false. 86 00:05:49,050 --> 00:05:52,830 No Dot said check it. 87 00:05:52,830 --> 00:05:54,140 True. 88 00:05:55,300 --> 00:05:59,320 OK so now let's actually run our project and see what happens. 89 00:05:59,370 --> 00:06:03,370 As you can see here our application is actually running on this emulator. 90 00:06:03,510 --> 00:06:08,630 And as you can see here the value of this true or false variable is actually true. 91 00:06:08,850 --> 00:06:13,950 OK the value of this search box is actually on the value of this checkbox is actually true. 92 00:06:14,010 --> 00:06:14,500 OK. 93 00:06:14,640 --> 00:06:15,860 Yes checkbox. 94 00:06:15,870 --> 00:06:16,660 OK. 95 00:06:17,040 --> 00:06:19,110 And let me explain again. 96 00:06:19,380 --> 00:06:25,470 First I actually created a value of type Boolean and then I actually assigned a boolean expression to 97 00:06:25,470 --> 00:06:33,510 this variable so the value of this boolean expression is actually to true so that true value is going 98 00:06:33,510 --> 00:06:35,380 to be assigned to this variable. 99 00:06:35,430 --> 00:06:38,580 And here I actually created an if else statement here. 100 00:06:38,790 --> 00:06:44,370 If the value of is true or false value but is actually true then it's going to try to execute this line 101 00:06:44,370 --> 00:06:45,240 of code here. 102 00:06:45,240 --> 00:06:48,370 So as you can see here the value of this checkbox is true. 103 00:06:48,570 --> 00:06:51,100 OK the search box is actually on. 104 00:06:51,330 --> 00:06:51,870 OK. 105 00:06:51,890 --> 00:06:54,620 Else if the value of this check. 106 00:06:54,810 --> 00:06:57,310 True or false value but is actually false. 107 00:06:57,480 --> 00:06:57,740 OK. 108 00:06:57,780 --> 00:06:59,070 Exclamation mark. 109 00:06:59,070 --> 00:07:00,680 True or false means. 110 00:07:00,840 --> 00:07:05,790 If the value of the check box is actually false OK then it's going to actually execute this line of 111 00:07:05,790 --> 00:07:06,410 code here. 112 00:07:06,540 --> 00:07:06,940 OK. 113 00:07:06,990 --> 00:07:12,720 So now let's actually comment out this if else statement here because I want to show you another way 114 00:07:12,720 --> 00:07:15,830 in order to write these codes. 115 00:07:15,840 --> 00:07:16,770 OK everyone. 116 00:07:16,770 --> 00:07:19,010 Now I can just type in here see x. 117 00:07:19,050 --> 00:07:21,220 True or false. 118 00:07:21,570 --> 00:07:22,280 Yes. 119 00:07:22,350 --> 00:07:27,890 That said I checked and then here I need to put in a pair of round brackets. 120 00:07:28,140 --> 00:07:34,920 And here I can't just type in true or false question mark. 121 00:07:34,980 --> 00:07:35,980 True. 122 00:07:36,470 --> 00:07:37,010 OK. 123 00:07:37,110 --> 00:07:39,070 Otherwise false. 124 00:07:39,740 --> 00:07:40,020 OK. 125 00:07:40,020 --> 00:07:48,840 And this means that if the value of this true or false variable is true then assign the value true to 126 00:07:48,840 --> 00:07:50,160 this said checked method. 127 00:07:50,190 --> 00:07:53,450 Otherwise assign the value funds to this. 128 00:07:53,460 --> 00:07:54,200 So check it. 129 00:07:54,210 --> 00:07:55,380 OK. 130 00:07:55,380 --> 00:08:00,440 So if you've got this valuable and be assigned this expression to are valuable. 131 00:08:00,540 --> 00:08:05,200 So the result of this expression is going to be assigned to this variable. 132 00:08:05,310 --> 00:08:11,160 And if the value of this variable is true then it's going to assign the value true to the Smurfette. 133 00:08:11,160 --> 00:08:14,630 Otherwise it's going to actually assign the value false to this method. 134 00:08:14,710 --> 00:08:18,960 Again I can just type in S.H. And it's true or false. 135 00:08:19,260 --> 00:08:21,590 No data set checked. 136 00:08:22,260 --> 00:08:26,470 And then here inside the prentices again I can just put in a pair of round brackets. 137 00:08:26,520 --> 00:08:27,750 Exclamation mark. 138 00:08:27,770 --> 00:08:28,770 True. 139 00:08:30,310 --> 00:08:31,770 Or false. 140 00:08:32,450 --> 00:08:32,980 OK. 141 00:08:32,980 --> 00:08:33,910 Question March. 142 00:08:33,960 --> 00:08:36,840 True otherwise false. 143 00:08:36,910 --> 00:08:37,510 OK. 144 00:08:37,510 --> 00:08:45,190 So as you can see here I specified that if the value of the is true or false variable is false then 145 00:08:45,250 --> 00:08:48,570 assign the value true to this said checked Meffert. 146 00:08:48,700 --> 00:08:52,760 Otherwise assign the value false to this set check for the key. 147 00:08:52,840 --> 00:08:57,380 So as you can see here we put this exclamation marks before this variable name. 148 00:08:57,460 --> 00:08:57,930 OK. 149 00:08:58,060 --> 00:09:04,630 If the value of this variable is false assign the value true to this search check if it is related to 150 00:09:04,640 --> 00:09:07,690 this CSX true or false no object. 151 00:09:07,720 --> 00:09:15,320 Otherwise if the value of this is true or false variable is true assign the value of funds to this search 152 00:09:15,430 --> 00:09:18,080 method that is related to this see x. 153 00:09:18,090 --> 00:09:20,620 True or false no object. 154 00:09:20,620 --> 00:09:23,420 So let's actually run our project and see the results. 155 00:09:23,500 --> 00:09:28,200 Ok everyone as you can see here now our application is actually running on this emulator here. 156 00:09:28,270 --> 00:09:33,010 And as you can see the value of this true or false value of it is true. 157 00:09:33,010 --> 00:09:33,600 OK. 158 00:09:33,940 --> 00:09:39,910 So this checkbox is actually checked on as you can see here the value of this true or false variable 159 00:09:39,910 --> 00:09:40,720 is true. 160 00:09:40,720 --> 00:09:45,440 So this line of code as you can see here is get executed OK. 161 00:09:45,550 --> 00:09:47,650 So hopefully that makes sense. 162 00:09:47,770 --> 00:09:51,670 And let's actually go back and say this content underline made that example. 163 00:09:51,850 --> 00:09:58,290 And then let's actually dragging another linearly out horizontal into this linear layout vertical. 164 00:09:58,590 --> 00:09:59,330 Okay. 165 00:09:59,710 --> 00:10:04,900 And then dreich in a large takes you into this linearly out horizontal here. 166 00:10:04,960 --> 00:10:12,100 You can also put it inside this linear horizontal here inside this componentry or here. 167 00:10:12,160 --> 00:10:12,740 OK.